A cylindrical tank is 3 m tall with a 2 m diameter. If water costs $0.02 per liter, how much does it cost to fill? (Volume = πr²h, 1 m³ = 1000 L, π ≈ 3.14)
Answer
$188.4
How to solve it
1
Radius: 2 ÷ 2 = 1 m
2
Volume: 3.14 × 1² × 3 = 9.42 m³
3
Liters: 9.42 × 1000 = 9420 L
4
Cost: 9420 × $0.02 = $188.40
Hints
Find radius from diameter
Calculate volume in cubic meters
Convert to liters
Multiply by cost per liter